The worm gears created by EP are square and so are considerably versatile for mounting. The machining of the parts, completed using numeric control machines, guarantees optimum precision for the restricted tolerances, making a product which will remain reliable over time. The groupings are constructed with aluminium casings from sizes 025 to 090, while the sizes 110, 130 and 150 are manufactured from cast iron. All of the bodies are painted with RAL 9022 aluminium color to protect the parts from ageing and also to give better safety against microblowholes which may be within the aluminium. The gears are supplied with at least one filling connect that is also used during assessment to check for possible leaks. A connection flange enables two gears to become combined to be able to obtain high gear ratios. Four sizes of CHPC pre-stage gears can be found to set with the gears; they are also built in aluminium and are painted like the worm gears
Gears that are supplied with mounting flanges must be assembled with motors whose shaft and flange tolerances match a “normal course” of quality in order to avoid vibration and forcing of the input CHM – WORM GEARED MOTORS AND WORM GEAR UNITS bearing. Motors given by Chiaravalli Group S.p.A. guarantee that this requirement is fulfilled. For ease of consultation, the correspondence of the size of the B5 and B14 engine with the sizes of the shaft and the motor connection flange are proven in the following table. Understand that, as the engine connection flanges are separate from the body it is also possible to get a shaft / flange combination that does not match the table, electronic.g. 19/140, thereby offering adaptability for additional non-unified models such as the brushless or direct current types.



Professional production Roots Vacuum Pumps, rotary vane pump, rotary piston pump, liquid ring vacuum pump, Oil-free Air Compressor, Screw Compressor, Scroll Compressor Manufacturer and Supplier.